C&P Plastics, Inc } Brenham Texas



CNC Turning & Milling of G10 Phenolic Horizontal Interphase for the Electrical/Switchgear Industry

CNC Turning & Milling of G10 Phenolic Horizontal Interphase for the Electrical/Switchgear Industry

Based off a customer supplied, 2D CAD print, C&P Plastics built a phenolic horizontal interphase used within an electrical scanning application. Using our CNC lathe, we began this process by rough and finish turning the outer diameter of this product, and then created a grooved and v-grooved center in accordance with the dimensions specified on the client's print. We subsequently employed our manual milling machinery to mill all flats and drill two holes into the piece in precise locations as specified for this project.

After the interphase was manufactured, we used a paint booth to spray paint the part Anti Trac grey, and then inspected the component using both height and pin gauges and calipers. Meeting a (±) .005 of an inch precision tolerance, along with a (±) .5° angular tolerance, we constructed the horizontal interphase to measure precisely 9.75 inches in overall length and 1.5 inches in outer diameter. In addition, the part possessed 60° V-grooves with a .625 of an inch width, as well as a center groove measuring .876 of an inch in outer diameter and .375 of an inch in width. The finished part also weighed .8 lbs.

Successfully able to meet precise client specifications, C&P Plastics built a horizontal interphase for the electrical industry, delivering the finished product to our buyer's facility in Houston, Texas.


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Product Name Horizontal Interphase
Product Description This Horizontal Interphase is used within an electrical application.
Capabilities Applied/Processes CNC Turning
  • Rough & Finish Turn OD
  • Groove & V-Groove Center to Dimensions on Print
CNC Milling
  • Mill Flats
  • Drill 2 Holes
Equipment Used to Manufacture Part CNC Lathe
Manual Milling Machine
Paint Booth
Spray Gun
Overall Part Dimensions O.A.L.: 9.750"
O.D.: ø1.500"
V Grooves:
  • Angle: 60°
  • Width: .625"
Center Groove:
  • O.D.: ø.876"
  • Width: .375"
Tightest Tolerances ±.005"
Material Used G10 Phenolic
Material Finish Gray Paint
In Process Testing/Inspection Performed Height Gauge
Pin Gauge
Estimated Part Weight .8 lbs
Industry for Use Electrical
Quantity 100
Delivery Location Houston, Texas
Standards Met Customer supplied print, 2D CAD Drawing


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